Abstract
Nowadays, Mesenchymal stem cells (MSCs) have become one of the most attractive tools for treating tumors, due to their specific characteristics, the most prominent of which are tropism toward tumor. These cells will exert their effects through their secretion. In this study, our aim was to evaluate the anti-cancer effect of umbilical cord-derived mesenchymal cells (UCMSC) secretome, on MCF-7 tumor cells. MSCs were extracted from the umbilical cord of mothers, having normal delivery or cesarean section. After culture, the supernatants of these cells were collected and freeze-dried. The cytotoxic effect of freeze-dried secretome was examined at different concentrations on MCF-7 and the optimum concentrations (IC50) were calculated, using MTT assay. These results were confirmed by BrdU assay. The effect of induction of apoptosis of the MSC secretome on MCF-7 was determined, using annexin V/PI method by flow cytometry. The results of our study indicate that the isolation and growth time of UCMSCs of mothers who were naturally delivered was lower than those who received cesarean section. Co-culture studies showed that MSCs had cytotoxic effects on MCF-7 cells. The MSC secretome also showed cytotoxic effects on the MCF-7 cell line, this effect was mediated by induction of apoptosis, which was dose-dependent with an IC50 of 10 mg/mL.
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Acknowledgements
This work has been supported by research council of Isfahan University of Medical Sciences, Project No. 394642. Authors express their special thanks to Dr. Mina Mirian for her valuable support in the cell culture lab during our experiments on cells.
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The umbilical cord samples were taken from infants of mothers who were delivered with the normal and/or cesarean section, after obtaining written consent from the parents and were in accordance with the ethical standards of the institutional research committee. This article does not contain any studies with animals performed by any of the authors.
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Mirabdollahi, M., Haghjooyjavanmard, S. & Sadeghi-aliabadi, H. An anticancer effect of umbilical cord-derived mesenchymal stem cell secretome on the breast cancer cell line. Cell Tissue Bank 20, 423–434 (2019). https://doi.org/10.1007/s10561-019-09781-8
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DOI: https://doi.org/10.1007/s10561-019-09781-8